Conference on Electrical Insulation & Dielectric Phenomena — Annual Report 1986最新文献_第4页

Individual & ensemble water tree growth 单个和整体水树生长

Conference on Electrical Insulation & Dielectric Phenomena — Annual Report 1986 Pub Date : 1986-11-01 DOI: 10.1109/CEIDP.1986.7726477

L. Dissado, S. Rowland, J. C. Fillipini, J. Fothergill, S. Wolfe, C. Meyer

引用次数: 2

Voltage dependence of corona signature from defect stator bar insulation during aging 老化过程中缺陷定子棒绝缘电晕特征的电压依赖性

Conference on Electrical Insulation & Dielectric Phenomena — Annual Report 1986 Pub Date : 1986-11-01 DOI: 10.1109/CEIDP.1986.7726491

Y. J. Kim, J. K. Nelson

引用次数: 4

The effect of polypropylene morphology on AC breakdown 聚丙烯形态对交流击穿的影响

Conference on Electrical Insulation & Dielectric Phenomena — Annual Report 1986 Pub Date : 1986-11-01 DOI: 10.1109/CEIDP.1986.7726494

B. Krishnakumar, R. Gupta, E. Forster, J. Laghari

引用次数: 5

Polarization effects in polymer dielectrics: Theoretical modeland experimental results 聚合物电介质中的极化效应:理论模型和实验结果

Conference on Electrical Insulation & Dielectric Phenomena — Annual Report 1986 Pub Date : 1986-11-01 DOI: 10.1109/CEIDP.1986.7726439

A. Primatic, R. Doran, J. Orehotsky

{"title":"Polarization effects in polymer dielectrics: Theoretical modeland experimental results","authors":"A. Primatic, R. Doran, J. Orehotsky","doi":"10.1109/CEIDP.1986.7726439","DOIUrl":"https://doi.org/10.1109/CEIDP.1986.7726439","url":null,"abstract":"The voltage decay response as a function of time after open circuiting a fully charged capacitor containing a molecularly polarized dielectric media was examined in an equivalent circuit representation. The equivalent circuit involves: the resistance (R) of the dielectric as a circuit element representing leakage effects; the capacitance (C) of the dielectric for characterizing the time dependence of the RC discharging circuit effect; and a black box (K) for representing the time dependence of the molecular polarization effects in the dielectric. From this equivalent circuit representation, the voltage decay due to leakage current, capacitive discharging, and polarization effects was found to obey a power law time dependence characterized by a CK time factor which is added to the open circuit run time (t) where this sum is raised to a negative K/R power: V = Va [CK]K/R [CK + t]−K/R This predicted power law time dependence was examined experimentally using several simple and composite polymer dielectrics, and the results were generally consistent with the predicted behavior particularly for the simple polymer dielectrics.","PeriodicalId":354533,"journal":{"name":"Conference on Electrical Insulation & Dielectric Phenomena — Annual Report 1986","volume":"106 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1986-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121150363","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Near UV emission during electrical tree initiation in LDPE LDPE中电子树形成过程中的近紫外辐射

Conference on Electrical Insulation & Dielectric Phenomena — Annual Report 1986 Pub Date : 1986-11-01 DOI: 10.1109/CEIDP.1986.7726473

S. Bamji, A. Bulinski, R. Densley

引用次数: 2

Behavior of electrostatic charge and distribution of velocity of flowing petroleum in relaxation pipe 静电荷行为与石油在松弛管内流动的速度分布

Conference on Electrical Insulation & Dielectric Phenomena — Annual Report 1986 Pub Date : 1986-11-01 DOI: 10.1109/CEIDP.1986.7726446

N. Kitamura, K. Horii

引用次数: 2

The effect of pressure on the prebreakdown events in toluene 压力对甲苯中预击穿事件的影响

Conference on Electrical Insulation & Dielectric Phenomena — Annual Report 1986 Pub Date : 1986-11-01 DOI: 10.1109/CEIDP.1986.7726458

G. FitzPatrick, E. Forster

{"title":"The effect of pressure on the prebreakdown events in toluene","authors":"G. FitzPatrick, E. Forster","doi":"10.1109/CEIDP.1986.7726458","DOIUrl":"https://doi.org/10.1109/CEIDP.1986.7726458","url":null,"abstract":"Optical studies of the events leading to electrical breakdown in dielectric materials have suggested that the initiation of this process takes place at the metal dielectric interface [1,2]. From high-speed photographs of these prebreakdown events it has been suggested that at selected metal sites electrons are injected into the material or extracted from it depending on the local electrical field conditions [3]. Consequently, streamers are formed that propagate through the dielectric. The photographs obtained with image — converter cameras permit the study of the growth rate, but they indicate only the existence of a region of different refractive index near the injection sites and do not reveal the cause of that region. It has been suggested that these streamers represent regions of lower density than that of the surrounding material, possibly even a vapor phase or a void [2,4]. To check these possibilities studies were initiated of the effect of pressure on these processes. It was reasoned that if these regions were indeed of lower density and contained a vapor phase, their formation might be inhibited by increasing the ambient pressure. In a preceding paper [5], it was shown that, in n-hexane, pressure indeed caused the disappearance of these primary streamers. To check the broader validity of these observations a study was undertaken of the effect of pressure on the prebreakdown process in toluene which with its aromatic structure represents a quite different molecular species than the linear saturated hydrocarbon, n-hexane. The results of this study are presented in this paper.","PeriodicalId":354533,"journal":{"name":"Conference on Electrical Insulation & Dielectric Phenomena — Annual Report 1986","volume":"668 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1986-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132333024","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Distribution of ion flow field quantities in air under HVDC transmission lines 高压直流输电线路下空气中离子流场量的分布

Conference on Electrical Insulation & Dielectric Phenomena — Annual Report 1986 Pub Date : 1986-11-01 DOI: 10.1109/CEIDP.1986.7726492

Z. Yan, C. Wen, G. Gela

引用次数: 0

Effect of free volume in polyethylene on impulse breakdown 聚乙烯自由体积对脉冲击穿的影响

Conference on Electrical Insulation & Dielectric Phenomena — Annual Report 1986 Pub Date : 1986-11-01 DOI: 10.1109/CEIDP.1986.7726495

M. Sone, H. Isono, H. Mitsui

引用次数: 0

Insulator damage from a moving arc in a surface discharge switch 表面放电开关中运动电弧对绝缘子的损坏

Conference on Electrical Insulation & Dielectric Phenomena — Annual Report 1986 Pub Date : 1986-11-01 DOI: 10.1109/CEIDP.1986.7726437

P. Ranon, A. Watson, T. Engel, M. Kristiansen, L. Hatfield

引用次数: 1